If A = {2, 4, 6, 8, 10} and B = {3, 6, 9, 12, 15}, find A – B and B – A.

We know that the (A-B) is the set of elements which belongs to A but does not belong to B and (B-A) is the set of elements which belongs to B but does not belong to A

⇒ A – B = {2, 4, 6, 8, 10} – {3, 6, 9, 12, 15} = {2, 4, 8, 10}

⇒ B – A = {3, 6, 9, 12, 15} – {2, 4, 6, 8, 10} = {3, 9, 12, 15}

Ans. A – B = {2, 4, 8, 10}

B – A = {3, 9, 12, 15}